diff options
Diffstat (limited to 'drivers/usb/gadget/s3c2410_udc.c')
| -rw-r--r-- | drivers/usb/gadget/s3c2410_udc.c | 60 |
1 files changed, 51 insertions, 9 deletions
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index 2b025200a69..6d8b04061d5 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1481,7 +1481,9 @@ static int s3c2410_udc_set_pullup(struct s3c2410_udc *udc, int is_on) { dprintk(DEBUG_NORMAL, "%s()\n", __func__); - if (udc_info && udc_info->udc_command) { + if (udc_info && (udc_info->udc_command || + gpio_is_valid(udc_info->pullup_pin))) { + if (is_on) s3c2410_udc_enable(udc); else { @@ -1558,6 +1560,32 @@ static const struct usb_gadget_ops s3c2410_ops = { .vbus_draw = s3c2410_vbus_draw, }; +static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd) +{ + if (!udc_info) + return; + + if (udc_info->udc_command) { + udc_info->udc_command(S3C2410_UDC_P_DISABLE); + } else if (gpio_is_valid(udc_info->pullup_pin)) { + int value; + + switch (cmd) { + case S3C2410_UDC_P_ENABLE: + value = 1; + break; + case S3C2410_UDC_P_DISABLE: + value = 0; + break; + default: + return; + } + value ^= udc_info->pullup_pin_inverted; + + gpio_set_value(udc_info->pullup_pin, value); + } +} + /*------------------------- gadget driver handling---------------------------*/ /* * s3c2410_udc_disable @@ -1579,8 +1607,7 @@ static void s3c2410_udc_disable(struct s3c2410_udc *dev) udc_write(0x1F, S3C2410_UDC_EP_INT_REG); /* Good bye, cruel world */ - if (udc_info && udc_info->udc_command) - udc_info->udc_command(S3C2410_UDC_P_DISABLE); + s3c2410_udc_command(S3C2410_UDC_P_DISABLE); /* Set speed to unknown */ dev->gadget.speed = USB_SPEED_UNKNOWN; @@ -1641,8 +1668,7 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev) udc_write(S3C2410_UDC_INT_EP0, S3C2410_UDC_EP_INT_EN_REG); /* time to say "hello, world" */ - if (udc_info && udc_info->udc_command) - udc_info->udc_command(S3C2410_UDC_P_ENABLE); + s3c2410_udc_command(S3C2410_UDC_P_ENABLE); } /* @@ -1917,6 +1943,17 @@ static int s3c2410_udc_probe(struct platform_device *pdev) udc->vbus = 1; } + if (udc_info && !udc_info->udc_command && + gpio_is_valid(udc_info->pullup_pin)) { + + retval = gpio_request_one(udc_info->pullup_pin, + udc_info->vbus_pin_inverted ? + GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, + "udc pullup"); + if (retval) + goto err_vbus_irq; + } + if (s3c2410_udc_debugfs_root) { udc->regs_info = debugfs_create_file("registers", S_IRUGO, s3c2410_udc_debugfs_root, @@ -1929,6 +1966,9 @@ static int s3c2410_udc_probe(struct platform_device *pdev) return 0; +err_vbus_irq: + if (udc_info && udc_info->vbus_pin > 0) + free_irq(gpio_to_irq(udc_info->vbus_pin), udc); err_gpio_claim: if (udc_info && udc_info->vbus_pin > 0) gpio_free(udc_info->vbus_pin); @@ -1956,6 +1996,10 @@ static int s3c2410_udc_remove(struct platform_device *pdev) debugfs_remove(udc->regs_info); + if (udc_info && !udc_info->udc_command && + gpio_is_valid(udc_info->pullup_pin)) + gpio_free(udc_info->pullup_pin); + if (udc_info && udc_info->vbus_pin > 0) { irq = gpio_to_irq(udc_info->vbus_pin); free_irq(irq, udc); @@ -1987,16 +2031,14 @@ static int s3c2410_udc_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int s3c2410_udc_suspend(struct platform_device *pdev, pm_message_t message) { - if (udc_info && udc_info->udc_command) - udc_info->udc_command(S3C2410_UDC_P_DISABLE); + s3c2410_udc_command(S3C2410_UDC_P_DISABLE); return 0; } static int s3c2410_udc_resume(struct platform_device *pdev) { - if (udc_info && udc_info->udc_command) - udc_info->udc_command(S3C2410_UDC_P_ENABLE); + s3c2410_udc_command(S3C2410_UDC_P_ENABLE); return 0; } |